Quality Control

In all production processes, SADIE Co. Ltd will monitor the extent to which our customer product specifications are meet. In the most general terms, there are two “issues” of product quality: (1) deviations from target specifications, and (2) excessive variability around target specifications. During the earlier stages of developing the production process, we will utilize an on-line or in-process quality control procedure to monitor an on-going production process.

The approach to on-line quality control is straightforward: We will simply extract samples of a certain size from the ongoing production process. We then produce line charts of the variability in those samples, and consider their closeness to target specifications. If a trend emerges in those lines, or if samples fall outside pre-specified limits, then we declare the process to be out of control and take action to find the cause of the problem.